hallucinations, psychosis, violent behavior, and even resulting, or death. scientists at uc-berkeley have discovered a chemical that restores vision to blind mice. the effect of the chemical wears off after a while, which researchers say may be better than other experimental approaches to restoring site that permanently altered the retina. >> now, your insta-weather forecast with chief meteorologist tom tasselmyer. >> the heat advisory remains in effect through at o'clock this evening. -- threw 8:00 this evening. we have the warnings of around natural family, advisories' brown all of delaware. only western maryland is not included in the advisory at this hour. 100 degrees in about -- in downtown baltimore right now.